Mitsubishi Heavy Industries HSB60-W User manual

INSTALLATION MANUAL
MITSUBISHI HEAVY INDUSTRIES
Air to Water Heat Pump using R32 refrigerant
Hydrolution (HM)
HSB60-W/FDCW60VNX-W
PT300/RC-HY20-W/RC-HY40-W
PSC012D135
English：Original instruction
This heat pump complies with EMC Directive 2004/108/
EC (replaced by 2014/30/EU on 20/4/2016), LV Directive
2006/95/EC (replaced by 2014/35/EU on 20/4/2016).
CE marking is applicable to the area of 50 Hz power supply.

1
Safety precautions 2
General information for installer 7
Over view and design 7
Transport and storage 9
Supplied components 9
Assembly 9
Hanging indoor unit 11
Hanging control unit 11
Dimensioning expansion vessel 12
Recommended installation order 12
Pipe installation 13
General 13
Installation diagram 13
HSB60-W 13
System requirements 14
Overflow valve 14
Pump capacity diagram 14
Pressure drop in indoor unit 14
Dimensions and pipe connections 15
HSB60-W 15
PT300 15
Water circuit 16
Connection to heating system 16
Connection to hot water heater 16
Housing disassembly of tank unit 16
Connecting hot water tank to indoor unit 17
Connecting hot water tank to water main 18
Hot water circulation circuit 19
Connection of external heat source 19
Refrigerant circuit 19
Connecting refrigerant pipes 19
Piping insulation 19
Dockings 20
Electrical installation 24
General 24
Electrical components 25
Accessibility, electrical connection for controller 26
Cable lock 28
Connection for HSB60-W 28
Power supply 28
Connection between indoor and outdoor unit 28
Connection between indoor unit and controller 29
Cascade connection setting 29
Recommended fuse size for HSB60 29
Recommended cable size for HSB60 29
HSB60 with RC-HY20 29
HSB60 with RC-HY40 29
Connection between controller and circulation pump (GP12)
30
HSB60 with RC-HY20 30
HSB60 with RC-HY40 30
Connection between controller and 3-way valve (QN10/QN12)
31
HSB60 with RC-HY20 31
HSB60 with RC-HY40 31
Connection between controller and sensors 32
RC-HY20 with HSB60 32
RC-HY40 with HSB60 33
Optional connections 34
RC-HY20 34
󱾁Room sensor BT50 34
󱾁Step controlled additional heat 34
󱾁Relay output for emergency mode 35
󱾁External circulation pump 35
󱾁AUX inputs/outputs 35
󱾁myUpway™ 37
RC-HY40 38
󱾁Load monitor 38
󱾁Room sensor BT50 38
󱾁Step controlled additional heat 38
󱾁Relay output for emergency mode 38
󱾁External circulation pump 38
󱾁AUX inputs/outputs 39
󱾁myUpway™ 39
Commissioning and adjusting 40
Preparations 40
Filling and venting 40
Hot water tank 40
Climate system 40
Inspection of installation 40
Start-up and inspection 41
Before start-up 41
Commissioning with heat pump 41
Commissioning with additional heater only 41
3-way valve operation check 41
AUX function check 41
Cooling mode 41
Cleaning particle filter 41
Secondary adjustment 41
Start guide 42
Heating/cooling curve setting 48
Hot water circulation setting 49
SG ready 50
Control 51
Display unit 51
Menu system 52
Menu list 55
Menu 1 – Indoor climate 55
Menu 2 – Hot water 55
Menu 3 – Info 55
Menu 4 – My system 55
Menu 5 – Service 56
Service 64
Disturbances in comfort 68
Manage alarm 68
Troubleshooting 68
Additional heating only 69
Alarm list 70
Accessories 73
Technical data 74
Dimensions and setting-out coordinates 74
Electrical circuit diagram 75
Table of Contents

2
Safety precautions
Safety precautions
When installing the unit, be sure to check
whether the selection of installation
place, power supply specifications,
usage limitation (piping length, height
differences between indoor and outdoor
units, power supply voltage and etc.) and
installation spaces.
zWe recommend you to read this
“SAFETY PRECAUTIONS” carefully
before installation in order to gain full
advantage of the functions of the unit
and to avoid malfunction due to
mishandling.
zThe precautions described below are
divided into WARNING and CAUTION .
The matters with possibilities leading
to serious consequences such as
death or serious personal injury due
to erroneous handling are listed in
the WARNING and the matters with
possibilities leading to personal injury
or damage of the unit due to erroneous
handling including probability leading to
serious consequences in some cases
are listed in CAUTION . These are very
important precautions for safety. Be
sure to observe all of them without fail.
zBe sure to confirm no anomaly on the
equipment by commissioning after
completed installation and explain the
operating methods as well as the
maintenance methods of this equipment
to the user according to the owner’s
manual.
zKeep the installation manual together
with owner’s manual at a place where
any user can read at any time. Moreover
if necessary, ask to hand them to a new
user.
This heat pump complies with EMC
Directive 2014/30/EU.
This appliance is designed for use in a
home environment and can be used by
children aged from 8 years and above and
persons with reduced physical, sensory or
mental capabilities or lack of experience
and knowledge if they have been given
supervision or instruction concerning use
of the appliance in a safe way and
understand the hazards involved. Children
WARNING
Installation must be carried out by
the qualified installer.
If you install the system by yourself, it may cause
serious trouble such as water leaks, electric
shocks, fire and personal injury, as a result of a
system malfunction.
Install the system in full accordance
with the instruction manual.
Incorrect installation may cause bursts, personal
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Use the original accessories and the
specified components for installation.
If parts other than those prescribed by us are used,
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personal injury.
When installing in small rooms, take
prevention measures not to exceed
the density limit of refrigerant in the
event of leakage.
Consult the expert about prevention measures. If
the density of refrigerant exceeds the limit in the
event of leakage, lack of oxygen can occur, which
can cause serious accidents.
Ventilate the working area well in the
event of refrigerant leakage during
installation.
If the refrigerant comes into contact with naked
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After completed installation, check that
no refrigerant leaks from the system.
If refrigerant leaks into the room and comes into
contact with an oven or other hot surface, poisonous
gas is produced.
shall not play with the appliance. Cleaning
and user maintenance shall not be made
by children without supervision.
This in accordance to applicable parts of
the low voltage directive 2014/35/EU, LVD.
This appliance is also intended for use by
experts or trained users in shops, hotels,
light industry, on farms and in similar
environments. This in accordance to
applicable parts of the machinery directive
2006/42/EC.
CE marking is applicable to the area of 50
Hz power supply.
The emission sound pressure level from
each Indoor and Outdoor unit is under 70
dB(A).

3
the box. Install the service panel correctly.
Incorrect installation may result in overheating
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Do not perform brazing work in the
airtight room.
It can cause lack of oxygen.
Use the prescribed pipes, flare nuts
and tools for R32 or R410A.
Using existing parts (for R22 or R407C) can
cause the unit failure and serious accidents due to
burst of the refrigerant circuit.
Tighten the flare nut by using double
spanners and torque wrench according
to prescribed method. Be sure not to
tighten the flare nut too much.
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by tightening with excess torque can cause burst
or refrigerant leaks which may result in lack of
oxygen.
Do not open the service valves for
liquid line and gas line until completed
refrigerant piping work, air tightness
test and evacuation.
If the compressor is operated in state of opening
service valves before completed connection of
refrigerant piping work, air can be sucked into
refrigerant circuit, which can cause bust or
personal injury due to anomalously high pressure
in the refrigerant.
Do not put the drainage pipe directly into
drainage channels where poisonous
gases such as sulphide gas can occur.
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drainage pipe and seriously affect the user’s
health and safety.
Only use prescribed optional parts.
The installation must be carried out by
the qualified installer.
If you install the system by yourself, it can cause
serious trouble such as water leaks, electric
VKRFNV¿UH
Do not run the unit with removed panels
or protections
Touching rotating equipments, hot surfaces or
high voltage parts can cause personal injury due
to entrapment, burn or electric shocks.
Be sure to fix up the service panels.
,QFRUUHFW¿[LQJFDQFDXVHHOHFWULFVKRFNVRU
¿UHGXHWRLQWUXVLRQRIGXVWRUZDWHU
Do not perform any repairs or modifi-
cations by yourself. Consult the dealer
if the unit requires repair.
If you repair or modify the unit, it can cause water
Safety precautions
Hang up the unit at the specified points
with ropes which can support the
weight in lifting for portage. And to
avoid jolting out of alignment, be sure to
hang up the unit at 4-point support.
An improper manner of portage such as 3-point
support can cause death or serious personal injury
due to falling of the unit.
Install the unit in a location with good
support.
Unsuitable installation locations can cause the
unit to fall and cause material damage and
personal injury.
Ensure the unit is stable when installed,
so that it can withstand earthquakes
and strong winds.
Unsuitable installation locations can cause the
unit to fall and cause material damage and
personal injury.
Ensure that no air enters in the refriger-
ant circuit when the unit is installed
and removed.
If air enters in the refrigerant circuit, the pressure
in the refrigerant circuit becomes too high, which
can cause burst and personal injury.
The electrical installation must be
carried out by the qualified electrician
in accordance with “the norm for
electrical work” and “national wiring
regulation”, and the system must be
connected to the dedicated circuit.
Power supply with insufficient capacity and
incorrect function done by improper work can
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Be sure to shut off the power before
starting electrical work.
Failure to shut off the power can cause electric
shocks, unit failure or incorrect function of
equipment.
Be sure to use the cables conformed
to safety standard and cable ampacity
for power distribution work.
Unconformable cables can cause electric leak,
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Use the prescribed cables for electrical
connection, tighten the cables securely
in terminal block and relieve the
cables correctly to prevent overloading the
terminal blocks.
Loose connections or cable mountings can cause
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Arrange the wiring in the control box so
that it cannot be pushed up further into

4
OHDNVHOHFWULFVKRFNVRU¿UH
Do not perform any change of protec-
tive device itself or its setup condition
The forced operation by short-circuiting protective
device of pressure switch and temperature
controller or the use of non specified component
FDQFDXVH¿UHRUEXUVW
Be sure to switch off the power supply
in the event of installation, inspection
or servicing.
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of electric shocks, unit failure or personal injury
due to the unexpected start of fan.
Consult the dealer or an expert regar-
ding removal of the unit.
Incorrect installation can cause water leaks,
HOHFWULFVKRFNVRU¿UH
Stop the compressor before disconnec-
ting refrigerant pipes in case of pump
down operation.
If disconnecting refrigerant pipes in state of
opening service valves before compressor
stopping, air can be sucked, which can cause burst
or personal injury due to anomalously high
pressure in the refrigerant circuit.
CAUTION
Carry out the electrical work for ground
lead with care.
Do not connect the ground lead to the gas line,
water line, lightning conductor or telephone line’s
ground lead. Incorrect grounding can cause unit
faults such as electric shocks due to short-
circuiting.
Use the circuit breaker with sufficient
breaking capacity.
If the breaker does not have sufficient breaking
capacity, it can cause the unit malfunction and
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Earth leakage breaker must be insta-
lled.
If the earth leakage breaker is not installed, it can
cause electric shocks.
Do not use any materials other than a
fuse with the correct rating in the
location where fuses are to be used.
Connecting the circuit with copper wire or other
PHWDOWKUHDGFDQFDXVHXQLWIDLOXUHDQG¿UH
Do not install the unit near the location
where leakage of combustible gases
can occur.
If leaked gases accumulate around the unit, it can
FDXVH¿UH
Do not install the unit where corrosive
gas (such as sulfurous acid gas etc.) or
combustible gas (such as thinner and
petroleum gases) can accumulate or collect,
or where volatile combustible substances
are handled.
Corrosive gas can cause corrosion of heat
exchanger, breakage of plastic parts and etc. And
FRPEXVWLEOHJDVFDQFDXVH¿UH
Secure a space for installation, inspec-
tion and maintenance specified in the
manual.
Insufficient space can result in accident such as
personal injury due to falling from the installation
place.
When the outdoor unit is installed on a
roof or a high place, provide permanent
ladders and handrails along the access
route and fences and handrails around the
outdoor unit.
If safety facilities are not provided, it can cause
personal injury due to falling from the installation
place.
Do not use the indoor unit at the place
where water splashes may occur.
Since the indoor unit is not waterproof, it
FDQFDXVHHOHFWULFVKRFNVDQG¿UH
Do not install or use the system close
to the equipment that generates elec-
tromagnetic fields or high frequency
harmonics.
Equipment such as inverters, standby generators,
medical high frequency equipments and
telecommunication equipments can affect the
system, and cause malfunctions and breakdowns.
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telecommunication equipment, and obstruct its
function or cause jamming.
Do not install the outdoor unit in a
location where insects and small animals
can inhabit.
Insects and small animals can enter the electric
SDUWVDQGFDXVHGDPDJHRU¿UH,QVWUXFWWKHXVHUWR
keep the surroundings clean.
Do not use the base flame for outdoor
unit which is corroded or damaged due
to long periods of operation.
Using an old and damage base flame can cause
the unit falling down and cause personal injury.
Do not install the unit in the locations
listed below.
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Safety precautions

5
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the unit such as sulphide gas, chloride gas, acid
and alkaline can occur.

Vehicles and ships.

Locations where cosmetic or special sprays are
often used.

Locations with direct exposure of oil mist and
steam such as kitchen and machine plant.

Locations where any machines which generate
high frequency harmonics are used.

Locations with salty atmospheres such as
coastlines.

Locations with heavy snow (If installed, be sure
WRSURYLGHEDVHÀDPHDQGVQRZKRRGPHQWLRQHG
in the manual).

Locations where the unit is exposed to chimney
smoke.

Locations at high altitude (more than 1000m
high).

Locations with ammonic atmospheres.

Locations where heat radiation from other heat
VRXUFHFDQD൵HFWWKHXQLW

Locations without good air circulation.

Locations with any obstacles which can prevent
inlet and outlet air of the unit.

Locations where short circuit of air can occur (in
case of multiple units installation).

Locations where strong air blows against the air
outlet of outdoor unit.
It can cause remarkable decrease in performance,
corrosion and damage of components,
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Do not install the outdoor unit in the
locations listed below.

Locations where discharged hot air or operating
sound of the outdoor unit can bother
neighborhood.

Locations where outlet air of the outdoor unit
blows directly to plants.

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transmitted due to insufficient strength of
structure.

Locations where vibration and operation sound
generated by the outdoor unit can affect
seriously. (on the wall or at the place near bed
room)

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harmonics is placed. (TV set or radio receiver is
placed within 5m)
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,WFDQD൵HFWVXUURXQGLQJHQYLURQPHQWDQGFDXVHD
claim.
Do not install the remote controller at
the direct sunlight.
It can cause malfunction or deformation of the
remote controller.
Do not use the unit for special purposes
such as storing foods, cooling precision
instruments and preservation of
animals, plants or art.
It can cause the damage of the items.
Take care when carrying the unit by
hand.
If the unit weights more than 20kg, it must be
carried by two or more persons. Do not carry by
the plastic straps, always use the carry handle
when carrying the unit by hand. Use gloves to
PLQLPL]HWKHULVNRIFXWVE\WKHDOXPLQXP¿QV
Dispose of any packing materials cor-
rectly.
Any remaining packing materials can cause
personal injury as it contains nails and wood. And
WRDYRLGGDQJHURIVX൵RFDWLRQEHVXUHWRNHHSWKH
plastic wrapper away from children and to dispose
after tear it up.
Pay attention not to damage the drain
pan by weld spatter when welding
work is done near the indoor unit.
If weld spatter entered into the indoor unit during
welding work, it can cause pin-hole in drain pan
and result in water leakage. To prevent such
damage, keep the indoor unit in its packing or
cover it.
Be sure to insulate the refrigerant pipes
so as not to condense the ambient air
moisture on them.
Insufficient insulation can cause condensation,
which can lead to moisture damage on the ceiling,
ÀRRUIXUQLWXUHDQGDQ\RWKHUYDOXDEOHV
Be sure to perform air tightness test
by pressurizing with nitrogen gas after
completed refrigerant piping work.
If the density of refrigerant exceeds the limit in
the event of refrigerant leakage in the small room,
lack of oxygen can occur, which can cause serious
accidents.
Do not touch any buttons with wet hands.
It can cause electric shocks.
Do not shut off the power supply imme-
diately after stopping the operation.
Wait at least 5 minutes, otherwise there is a risk
of water leakage or breakdown.
Do not control the system with main
power switch.
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Safety precautions

6
Safety precautions
fan can start unexpectedly, which can cause
personal injury.
Do not touch any refrigerant pipes
when the system is in operation.
During operation the refrigerant pipes become
extremely hot or extremely cold depending the
operating condition, and it can cause burn injury
or frost injury.
Notabilia for units designed for R32
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will rise to pressure about 1.6 times higher
than that of a conventional refrigerant (R22 or
R407C). A cylinder containing R32 has a light
blue indication mark on the top.
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a cylinder in the liquid phase.
 $OOLQGRRUXQLWVPXVWEHPRGHOVGHVLJQHG
exclusively for R32. Check connectable indoor
unit models in a catalog, etc. (A wrong indoor
unit, if connected into the system, will impair
proper system operation)
Dedicated tools for R32 or R410A
a) Gauge manifold
b) Charge hose
c) Electronic scale for refrigerant charge
d) Vacuum pump
e) Flaring tool set
f) Protrusion control gauge for copper pipe
g) Vacuum pump adapter
h) Gas leak detector

7
General information for the installer
General information for installer
Over view and design
HSB60-W
XL1 XL2
XL1 3
XL1 4
HZ2
EP2
PF3
UB1 UB2 UB3
BT15
BT3
BP4
AA2 3
AA23-X100
AA2 3 -X4
AA23-S3
A23-F3
AA2 3 - X1
BT12
Pipe connections
XL1(Red mark) Climate system supply
XL2 (Blue mark) Climate system return
XL14 Connection, gas line
XL13 Connection, liquid line
Valves etc.
EP2 Heat exchanger
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+= 'U\LQJ¿OWHU
Electrical components
AA23 Communication board
AA23-F3 Fuse for external heating cable
AA23-S3 DIP switch, addressing of outdoor unit
AA23-X1 Terminal block, incoming supply, connection
of KVR
AA23-X4 Terminal block, communication with indoor
module / control module
AA23-X100 Terminal block, communication outdoor
module
For outdoor unit installation information, see Installation
manual for Outdoor unit.
Sensor, thermostats
BP4 Pressure sensor, high pressure
BT3 Temperature sensor, heating medium, return
BT12 Temperature sensor, condenser, supply
%7 7HPSHUDWXUHVHQVRUÀXLGSLSH
Miscellaneous
UB1 Cable gland
UB2 Cable gland
UB3 Cable gland

8
PT300
1
2
3
4
5
6
7
8
9
10
11
12
13
14
13
15
16
Section of the PT300 storage tanks.
1. Upper insulation of the storage tank
2. Protective magnesium anode
3. Enamelled tank
4. Side insulation of the storage tank
5. Coil
6. Lower insulation of the storage tank
7. Adjustable foot
Side view of the PT300 storage tanks.
8. Thermometer
9. Connector pipe for mounting electric heating unit
10. Inspection opening
11. Hot water intake connector pipe
12. Hot water circulation connector pipe
13. Temperature sensor cover
14. Coil supply connector pipe
15. Connection of return line from the coil
16. Cold water supply connector pipe
General information for the installer

9
General information for the installer
Transport and storage
Indoor unit and tank unit must be transported and stored
vertically in dry conditions.
Supplied components
HSB60-W Indoor unit
Particle filter R25 (HQ1). Brackets kit

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


RC-HY20/40-W Control unit
Room sensor (RC-HY40 only)Outside sensor
LEK
Temperature sensorInsulation tape
LEK
Cable tiesAluminium tape
LEK
LEK
LEK
Current sensor (RC-HY40 only)Heating pipe paste
Assembly
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or boiler room.
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EH¿UPÀDWDQGYHUWLFDOSUHIHUDEO\DFRQFUHWHZDOO
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keep the weight of the unit. The height-adjusting legs allow
for levelling and stable setting.
PT300
0-15 mm
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in a room where noise does not matter. If this is not
possible, avoid placing it against a wall behind a bedroom
or other room where noise may be a problem.
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backs on to a bedroom or living room.
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order to avoid icing.
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future maintenance.

10
HSB60-W
Recommendation for positioning on wall
Min. 200mm Min. 200mm
Min. 300mmMin. 1000mm
Recommendation for positioning in corner
Min. 400mm
Min. 400mm
*Min 800mm is required in front
PT300
Amin
Amin is required on top to replace anode bar, and 500 mm is
required in front to replace immersion heater if equipped.
Application Connector pipe dia. Type of anode Amin
PT300 1" Chain ø26 ×8 150 mm
¾" Titanium anode 200 mm
RC-HY20/40-W
100 mm
100 mm 100 mm
General information for the installer

11
General information for the installer
Hanging indoor unit
It is recommended that the split box is installed in a room with
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room.
1. The bracket for the split box is mounted to the wall by use
of appropriate screws.
4-ø10
2. Insert HSB60 in the bracket mounted to the wall.
NOTE
Indoor unit weigh16 kg excluding water inside.
Hanging control unit
Use all mounting points and install control unit upright against
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Mounting point Mounting point
Mounting point Mounting point

12
Dimensioning expansion vessel
The expansion vessel volume must be at least 5% of total water
volume in the circulation system.
Initial pressure and max height difference
5HFRPPHQGHGPD[LPXPKHLJKWGL൵HUHQFHEHWZHHQH[SDQVLRQ
vessel and the highest point in the system is 5m.
The initial pressure of the pressure expansion vessel must be
dimensioned according to the maximum height (H) between
the vessel and the highest positioned radiator, see figure. An
initial pressure of 0.5 bar (5 mvp) means a maximum permitted
KHLJKWGL൵HUHQFHRIP
If the standard initial pressure in the pressure vessel is not high
enough it can be increased by filling via the valve in the
expansion vessel. The expansion vessel’s standard initial
pressure must be entered in the check list on User’s manua1.
Any change in the initial pressure affects the ability of the
expansion vessel to handle the expansion of the water.
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H
Recommended installation order
1. Hang indoor unit and control unit to appropriate position
and connect indoor unit and tank unit.
2. Connect indoor unit to climate system, cold and hot water
lines as well as any external heat sources. See page 13.
Also see docking descriptions on page 22, 23 and further
on.
3. Install refrigerant pipes according to the description on the
Installation manual for outdoor unit.
4. Connect current limiter, any centralised load control and
external contacts as well as the cable between indoor unit
and outdoor unit.
5. Connect incoming electricity to indoor unit and/or outdoor
unit. See page 28, 29.
6. Follow the commissioning instructions on page 30-40.
General information for the installer

13
Pipe installation
General
Pipe installation must be carried out in accordance with current
norms and directives.
A following table shows plumbing necessary for each product.
Refrigerant Plumbing
HSB Necessary Necessary
PT ᅀNecessary
RC-HY ᅀᅀ
This heat pump system is designed for low or medium
temperature heating system. It is recommended water
temperature must not exceed 55°C on supply and 45°C on
return at lowest design outdoor temperature (DOT) though
indoor unit can operate with a return temperature of up to 65°C
and an outgoing temperature from the unit of 65°C.
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installed outside the heat pump to facilitate any future
servicing.
Indoor unit can be connected to the radiator system, floor
heating system and/or fan convectors.
Safety valve is not equipped with in indoor unit. Make sure to
install safety valve in the circuit.
FDCW60-W
AA25
P
HSB60-W
BP4
BT3BT15
BT12
XL14
XL13
XL1
XL2
PT300
Pipe installation
Installation diagram
Outdoor unit provides heat for space heating and domestic hot water using free energy in the outdoor air within the range of low
temperature up to -20°C. The system is controlled by RC-HY20 or RC-HY40 control unit.
HSB60-W
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circulation pump to make a complete heating system. In case domestic hot water is required, 3 way valve and tank is also necessary.

14
System requirements
The minimum water volume in the climate system is subject to
the values in the table below. If it is not fulfilled, volume
vessel must be installed.
For more options, see the docking description on Page 20.
(liter)
With underfloor
cooling application
Without underfloor
cooling application
HSB60-W,
FDCW60VNX-W 50 20
Overflow valve
NOTE
A free flow is required for all docking options, which
means that an overflow valve must be installed.
The circulation pump may become damaged.
Pump capacity diagram
HSB60-W
HSB60 is not equipped with circulation pump.
This graph shows the characteristic of CPD11-25/55.
0
10
20
30
40
50
60
70
80
Pressure
[kPa]
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Flow [l / s]
Pressure drop in indoor unit
HSB60-W
0
5
10
15
20
25
30
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
8
Tryckfall
HBS05
HSB60
[
kPa]
Flow [l / s]
Connection of extra circulation pump
When connecting extra circulation pumps, requirements for
pressure, maximum flow etc must be met. See page 23 for
location.
NOTE
Non-return valve must be installed in case extra circulation
pump is used.See page 23 for the position.
The circlulation pump may become damaged.
Pipe installation

15
Dimensions and pipe connections
HSB60-W
XL13
XL1
XL14
XL2
Pipe connections
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XL2 (Blue mark) Climate system, return ø28 mm
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;/ /LTXLGOLQHUHIULJHUDQWÀDUHóࡉ
PT300
1634
1398
1187
1107
840
588
336
167
21-0/+15
315
930
1325
F
E
D
N
L
K
J
I
H
G
Connection U/m PT300
D Inspection opening mm ø120
E Heating unit connection inch ò ࡉ)HPDOH
F Thermometer enclosure mm ø10 Female
N Hot water outlet inch  ࡉ0DOH
L Hot water circulation inch ô ࡉ0DOH
K Temp. sensor enclosure (BT7) mm ø16 Female
J Coil supply inch  ࡉ0DOH
I Temp. sensor enclosure (BT6) mm ø16 Female
H Return from coil inch  ࡉ0DOH
G Cold water input inch  ࡉ0DOH
Pipe installation

16
Water circuit
Connection to heating system
Connect XL1 to supply line and X2 to return line from
heating system.
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installed as close to the indoor unit as possible.
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water system in usual case.
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WKHUPRVWDWVWRHQVXUHVX൶FLHQWÀRZ
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hot water circuit. (FL2)
For HSB60 install a safety valve for heating circuit on the
water pipe returning to indoor unit since it doesn’t have
port for FL2.
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valves must be inclined to prevent water pockets and must
also be frost proof.
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left open to the atmosphere. The water may drip from the pipe.
HSB60-W
XL14 XL1 XL13 XL2
Install safety valve as close to XL2 as possible.
Pipe installation
Connection to hot water heater
For HSB60 indoor unit, it is necessary to connect PT300 tank
unit applying 3 way valve in order to use domestic hot water
function.
Housing disassembly of tank unit
Removable housing with thermal insulation facilitates trans-
port and installation of the storage tank. Disassembly the ho-
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1. Remove the Temperature gauge, plug of the heating ele-
ment connector pipe and blanking plate of the inspection
opening.
2 Remove the upper cover of the housing together with
thermal insulation.
3. Remove the plugs from the connector pipes and black
bushings.
4. Remove the fixing screws and the strip connecting the
housing jacket.
5. Remove the jacket surrounding the tank (housing jacket.)
6. Remove the four-piece thermal insulation.
After the installation of the storage tank in its final location,
reinstall the removed components in the reverse order.

17
Housing and thermal insulation disassembly
1
2
34 56
Connecting hot water tank to indoor unit
CAUTION
Installation and commissioning of the storage tank
shall only be done by appropriately qualif ied installer.
The installer should inform the user of the functions of
the product and provide the necessary in formationon its
safe use.
Information
We recommend installing a strainer in order to protect the
pumps, check valve and the components of the heating
system.
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indoors where the temperature wouldn't drop below 15°C
in order to prevent pipings from icing.
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10 m.
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floor or foundation.
Pipe installation
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with the relevant regulations.
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GLDJUDPVHH¿JXUH
Installation diagram of the PT storage tank with one coil.
1
2
2
supply from heat
pump
1. PT storage tank
2. Cut-off valve
return to heat pump

18
Connecting hot water tank to water main
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for stable temperature hot water supply.
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water pressure at least 1 bar and max 10 bar. Install a
pressure reducer if the pressure at the cold water inlet to the
tank is higher than allowed.
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opening pressure on the incoming domestic water line
according to outline diagram in order to protect the storage
tank against overpressure. Pressure increases during heating
the water.
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from the safety valve can occur, which indicates that the
pressure has increased above the rated value, which
triggered the valve. This may in no way be prevented.
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an environment free of freezing and remain open to the
atmosphere. The manufacturer is not responsible for
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grate.
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installation diagram.
Installation diagram of the PT storage tank with one coil.
1
2
22
2
6
7
38
45
DHW
hot water circulation
(optional)
to sewerage
water supply system
1. PT storage tank
 &XWR൵YDOYH
3. Safety valve
4. Drain valve
5. Pressure reducer (option, if the pressure in the system
exceeds the allowable value)
6. Strainer
7. Hot water circulating pump
8. Hot water expansion vessel
Information
In order to minimize the f low of water f rom the saf ety valve
associated with the thermal expansion of the liquid, it is
advisable to install a suitable expansionvessel at the cold
water connection (see item 8.)
CAUTION
Installation of the appropriate safety valve in the cold
water supply line protecting the unit against
overpressure is mandatory!
CAUTION
Installation of necking of any kind (such as reducers, dirt pockets,
etc.) and cut-o valves between the storage tank and the safety
valve is not allowed. Only a T-pipe with a drain valve and a T-pipe
with an expansion vessel may be installed in these line sections.
CAUTION
Never block the safety valve or drain line. This can cause
a dangerous overpressure in the storage tank.
CAUTION
When heating water, slight, temporary discharge from
the safety valve can occur. This is a correct safety valve
function. Any attempt to interfere in its operati on can
lead to the danger and destruction of the storage tank.
CAUTION
Never use the equipment with clogged safety valves.
Connection
After the installation and levelling the tank, follow the proce-
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1. Remove protecting plugs from the connector pipes
2. Connect the hot water intake line (N).
3. Connect the cold water supply line together with the
required safety valves (G).
4. If the system has the hot water circulation system, connect
it to the connector pipe (L). Otherwise, plug the pipe.
5. Connect the supply (J) and return (H) of the heating
medium to the coil.
CAUTION
If there is an electric heating module installed in the
storage tank, ll the tank with water before connecting
it to the electrical installation.
Pipe installation